Navigation Links
Cornell researchers' study showing evidence of a major environmental trigger for autism
Date:11/10/2008

ITHACA, N.Y. The American Medical Association journal Archives of Pediatrics & Adolescent Medicine has published a new study by researchers at Cornell University indicating evidence of an environmental trigger for autism among genetically vulnerable children. It is the first peer-reviewed study to positively associate the prevalence of autism to a factor related to the levels of precipitation in the areas in which children live.

"This analysis is an important first step towards identifying a specific environmental trigger, or triggers, for autism," said lead author Michael Waldman of the Johnson Graduate School of Management at Cornell.

While many autism experts believe that the disorder is triggered by the combination of an environmental trigger and a genetic predisposition (experts have identified genes related to the condition but do not have a full understanding of the full set of related genes), previous literature provides few clues concerning what the important environmental triggers might be. "Our hope is that this study will spur those in the medical community to investigate what the specific trigger might be that is driving our findings, so that countless children can be spared an Autism Spectrum Disorder diagnosis," said Waldman, a professor of management and economics.

Co-author Associate Professor Sean Nicholson of the College of Human Ecology at Cornell added, "We looked at the hypothesis using three different statistical approaches and in each case we found strong evidence consistent with the hypothesis."

Dr. John Williams of the Department of Child and Adolescent Psychiatry at the Children's Hospital of Pennsylvania also contributed to the study. About the team's findings, he said: "These are provocative data that will generate a lot of discussion in the clinician and patient communities. Clearly, further study is required, especially given that many of the possible environmental triggers discussed may be avoidable or correctable."

The researchers discuss several possible environmental triggers related to higher levels of precipitation, including increased rates of early childhood television and video viewing, increased rates of vitamin D deficiency, and an increased exposure to chemicals used in household cleaners that children who spend more time indoors would likely experience. The research team plans to conduct further statistical studies aimed at identifying which of these possibilities are actual triggers for autism.

The study involved analyzing data from counties in the states of California, Oregon and Washington, and it found that county-level, school-age autism prevalence rates and autism prevalence counts are positively associated with a county's average annual precipitation. Additionally, analysis showed that within a county, autism prevalence rates and autism prevalence counts were higher for age groups that were exposed to more precipitation prior to the age of 3. The findings based on a statistical estimate of how many autistic children in the sample were diagnosed with autism due to the added or incremental exposure to the possible environmental triggers related to precipitation suggest that as many as 30 percent or more of autism diagnoses may be due to an environmental trigger or triggers related to levels of precipitation where the children live.

The study refines previous research on autism conducted by this team. Their latest report considers a specific hypothesis that there exists an important environmental trigger for autism among genetically predisposed children that is positively associated with levels of precipitation and solidifies the need for further research focused on identifying what the exact environmental trigger might be.


'/>"/>

Contact: Nicola Pytell
nwp2@cornell.edu
607-254-6236
Cornell University Communications
Source:Eurekalert

Related medicine news :

1. Weill Cornell Medical College receives 2 $100,000 grants for innovative global health research
2. AARP: Cornell University Tops 2008 List of Best Employers for Workers Over 50
3. Robotic surgery extends benefits to bladder cancer patients at NewYork-Presbyterian/Weill Cornell
4. Cornell efficiency experts seek to save precious minutes in deploying ambulances
5. Canine Cancer Web Exclusive for Dog Owners and Lovers, Presented by Morris Animal Foundation - Features Colorado State and Cornell University Veterinary Cancer Experts
6. NYP/Weill Cornell physician-scientists present latest cancer findings at ASCO meeting
7. Weill Cornell team identifies new cancer stem cell driving metastatic tumors
8. Cornell receives federal grants to create fabrics to render toxic chemicals harmless
9. Weill Cornell science briefs May 2008
10. NYP/Weill Cornell gene therapy clinical trial yields promising results for Batten disease
11. Weill Cornell Medical College Announces First Commencement of Its New Medical School Graduates in Doha, Qatar, May 8, 2008
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/26/2017)... ... 26, 2017 , ... RawTrition now brings you BioEnergy which is a powder ... , RawTrition is taking nutrients to the next level! The superfoods ... its raw form (unlike the synthetically made options that are on the market). , ...
(Date:4/25/2017)... ... ... Bellus Medical, a leader in medical aesthetics, recently acquired ... photodynamic cosmetics (PDC). , Allumera® is the first PDC cream specifically formulated to ... minimize the appearance of pores – all with minimal downtime and results that ...
(Date:4/25/2017)... IN (PRWEB) , ... April 25, 2017 , ... ... D.C., CEOs, CFOs and HR decision-makers are preparing for how his administration could ... Financial will provide insight into what changes are most likely to make it ...
(Date:4/25/2017)... Switzerland (PRWEB) , ... April 25, 2017 , ... ... innovation targets, they rely on contracted partners to help with process innovation in ... of combined drug formulation experience along with state-of-the-art analytical equipment in support of ...
(Date:4/25/2017)... ... April 25, 2017 , ... Somnoware, a leading ... patient care management module. Using this new feature, sleep physicians can now predict ... on continuous positive airway pressure (CPAP), oral, or other forms of sleep apnea ...
Breaking Medicine News(10 mins):
(Date:4/20/2017)... , April 20, 2017 NeuroVive Pharmaceutical ... today announced positive preclinical results demonstrating anti-fibrotic ... for non-alcoholic steatohepatitis (NASH), in an additional ... NV556 has previously shown similar anti-fibrotic ... Today, NeuroVive,s scientists present novel data demonstrating ...
(Date:4/19/2017)... -- Cardiology devices segment is anticipated to reach the highest ... Devices segment is likely to create absolute $ opportunity of ... 2017. By the end of 2027, Cardiology Devices segment is ... Mn, expanding at a CAGR of 18.4% over the forecast ... Pacific reprocessed medical devices market in terms of ...
(Date:4/19/2017)... , April 19, 2017 Global Surgical Drainage ... are tubes used to remove excess liquid and air. ... pus, urine, bile or lymph. Surgical drains are used ... such as orthopedics surgery, cardiovascular surgery, neurosurgery, plastic surgery ... post-surgery to prevent accumulation of fluid e.g. blood or ...
Breaking Medicine Technology: